Jeremy Renner let a big secret slip on the smoking patio at the Golden Globes... he's going to be a dad!

During a conversation with pal Eva Longoria, the 42-year-old actor was saying, "I'm going to fly in when her water breaks," to which the Desperate Housewives actress responded, "I'm so blown away," according to Us Weekly.

The Hurt Locker star's ex-girlfriend is pregnant and due to give birth next month. Although the pair "used to date but it wasn't serious," the unknown girl is currently living in Renner's L.A. home.